<template>
    <div style="padding: 10px">
        <!--    功能区-->
        <div style="margin: 10px 0">
            <el-button type="primary" @click="add">新增</el-button>
            <el-button type="primary">导入</el-button>
            <el-button type="primary">导出</el-button>

        </div>
        <!--搜索区域-->
        <div style="margin: 10px 0">
            <el-input v-model="search" placeholder="请输入关键字" style="width: 20%" clearable></el-input>
            <el-button type="primary" style="margin-left: 5px" @click="load">查询</el-button>

        </div>
        <el-table
                :data="tableData"
                border
                stripe
                style="width: 100%">
            <el-table-column
                    prop="id"
                    label="ID"
                    sortable
            >

            </el-table-column>
            <el-table-column
                    prop="name"
                    label="名称">
            </el-table-column>

            <el-table-column
                    prop="price"
                    label="价格">
            </el-table-column>
            <el-table-column
                    prop="author"
                    label="作者">
            </el-table-column>
            <el-table-column
                    prop="time"
                    label="发版日期">
            </el-table-column>
            <el-table-column
                    label="封面">
                <template #default="scope">
                    <el-image
                            style="width: 100px; height: 100px"
                            :src="scope.row.cover"
                            :preview-src-list="[scope.row.cover]"
                    >
                    </el-image>
                </template>
            </el-table-column>
            <el-table-column label="操作">
                <template #default="scope">
                    <el-button size="mini" @click="handleEdit(scope.row)">编辑</el-button>

                    <el-popconfirm
                            title="确定删除吗？" @confirm="handleDelete(scope.row.id)"
                    >
                        <template #reference>
                            <el-button size="mini" type="danger">删除</el-button>
                        </template>
                    </el-popconfirm>

                </template>
            </el-table-column>

        </el-table>

        <div style="margin: 10px">
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="currentPage"
                    :page-sizes="[5, 10, 20]"
                    :page-size="pageSize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>

            <el-dialog
                    title="提示"
                    v-model="dialogVisible"
                    width="30%">
                <el-form model="form" label-width="120px">

                    <el-form-item label="书籍名称">
                        <el-input v-model="form.name" style="width: 80%" placeholder="请输入名称"></el-input>
                    </el-form-item>

                    <el-form-item label="作者">
                        <el-input v-model="form.author" style="width: 80%" placeholder="请输入作者"></el-input>
                    </el-form-item>

                    <el-form-item label="价格">
                        <el-input v-model="form.price" style="width: 80%" placeholder="请输入价格"></el-input>
                    </el-form-item>

                    <el-form-item label="日期">
                        <el-date-picker v-model="form.time" value-format="YYYY-MM-DD" type="datetime" style="width: 80%" clearable></el-date-picker>

                    </el-form-item>
                    <el-form-item label="封面">

                        <el-upload
                                ref="upload"
                                action="http://localhost:9090/files/upload"
                                :on-success="filesUploadSuccess"
                                :auto-upload="false">
                            <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
                            <div slot="tip" class="el-upload__tip" style="display: inline-block;margin-left: 20px">只能上传jpg/png格式的文件,且不超过500kb</div>
                        </el-upload>

                    </el-form-item>
                </el-form>
                <template #footer>
    <span class="dialog-footer">
      <el-button @click="dialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="save">确 定</el-button>
    </span>
                </template>
            </el-dialog>
        </div>
    </div>
</template>

<script>


    import request from "@/utils/request";

    export default {
        name: 'Book',

        components: {

        },

        data(){
            return {
                form:{},
                dialogVisible:false,
                search:this.searchStr,
                currentPage:1,
                pageSize:10,
                total:0,
                tableData: []
            }
        },

        //加载方法的时候调用
        created() {
            this.load()
        },

        methods:{
            filesUploadSuccess(res){
                console.log("res image:" + res);
                this.form.cover = res.data
            },
            //查询用户信息数据
            load(){
                console.log("来了 。。。list:")

                request.get("/book",{
                    params: {
                        pageNum:this.currentPage,
                        pageSize:this.pageSize,
                        searchStr:this.search

                    },

                }).then(res => {
                    console.log("list:" + res.data.records)
                    this.tableData = res.data.records
                    this.total = res.data.total
                }).catch(function (error){
                    console.log("error:" + error)

                });
            },

            //弹出用户信息填写表单
            add(){
                this.dialogVisible=true//控制表单的显示和隐藏
                //清空表单域
                this.form = JSON.parse(JSON.stringify(row))//赋值为空对象，清空表单所有属性
                if (this.$ref["upload"]){
                    this.$ref["upload"].clearFiles();//清除历史文件列表

                }
            },
            //保存用户信息填写的表单信息
            save(){
                //form对象传到后台去 axios
                if (this.form.id){//更新
                    request.put("/book",this.form).then(res => {
                        console.log("update:" + res)
                        //对res的code的结果（0，1）判断后 进行弹窗提示
                        if (res.code == '0'){
                            this.$message({
                                type:"success",
                                message:"更新成功"
                            })
                        }else {
                            this.$message({
                                type:"error",
                                message:res.msg
                            })
                        }

                        this.load()//刷新表格数据
                        this.dialogVisible = false

                    })
                }else {//新增
                    request.post("/book",this.form).then(res => {
                        console.log("save book:" + res)
                        //进行弹窗提示
                        if (res.code == '0'){
                            this.$message({
                                type:"success",
                                message:"新增成功"
                            })
                        }else {
                            this.$message({
                                type:"error",
                                message:res.msg
                            })
                        }
                        this.load()//刷新表格数据
                        this.dialogVisible = false
                    })
                }

                // this.form = {}//传值
            },

            //编辑
            handleEdit(row){//避免表格的数据变化，将用户信息数据深拷贝，与原来的数据隔离开
                this.form = JSON.parse(JSON.stringify(row))
                this.dialogVisible = true
                this.$nextTick( () =>{//处理未来元素的方法
                    if (this.$ref["upload"]){
                        this.$ref["upload"].clearFiles();//清除历史文件列表

                    }
                })
            },

            handleDelete(id){
                console.log(id)
                request.delete("/book/" + id).then(res =>{
                    //进行弹窗提示
                    if (res.code == '0'){
                        this.$message({
                            type:"success",
                            message:"删除成功"
                        })

                        this.load()//重新加载

                    }else {
                        this.$message({
                            type:"error",
                            message:res.msg
                        })
                    }

                })
            },

            handleSizeChange(pageSize){//改变当前每页的个数触发
                this.pageSize = pageSize
                this.load()
            },

            handleCurrentChange(pageNum){
                this.currentPage = pageNum
                this.load()
            }
        }
    }
</script>
